EUVD-2026-62295Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Local vector required for ptrace access; PR:L because attacker must own or be permitted to trace the target process; only audit integrity is affected.
Primary rating from Vendor (freebsd).
CVSS VectorVendor: freebsd
Lifecycle Timeline
3DescriptionCVE.org
When auditing a system call executed via ptrace(PT_SC_REMOTE), the kernel passed the return value of an internal setup function to AUDIT_SYSCALL_EXIT() rather than the actual result of the executed system call. As a result, committed audit records for system calls which returned an error do not reflect the true outcome of the operation. That is, they indicate that the operation succeeded when it in fact failed.
Audit records for system calls executed via ptrace(PT_SC_REMOTE) may show an incorrect error status. An attacker with the ability to debug a process could use this to produce misleading audit trails, potentially undermining audit-based Intrusion Detection Systems (IDS).
AnalysisAI
FreeBSD's kernel audit subsystem silently misreports the outcome of system calls injected into remote processes via ptrace(PT_SC_REMOTE), recording failed operations as successful in BSM audit logs. A local attacker with ptrace capability can exploit this to falsify audit trails and evade audit-based intrusion detection systems, since the IDS receives fabricated success records for operations that actually returned errors. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local access to the FreeBSD system and the ability to attach via ptrace(2) to a target process using PT_SC_REMOTE. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The aggregate risk signal is consistently low across all available indicators. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the patches specified in FreeBSD Security Advisory FreeBSD-SA-26:45.audit, available at https://security.freebsd.org/advisories/FreeBSD-SA-26:45.audit.asc. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-223 – Omission of Security-relevant Information
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External POC / Exploit Code
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